This is the 1454th most frequent Polish word.
zwłoki
"Zwłoki" means "corpse" or "remains" in English.
Here, 'zwłoki' refers to a dead body, used in a literal sense.
Policja znalazła zwłoki w lesie.
The police found a corpse in the forest.
Here, 'zwłokach' (a plural locative form of 'zwłoki') is used metaphorically to mean a delay.
Po długich zwłokach, postanowiliśmy wyjechać na wakacje.
After a long delay, we decided to go on vacation.
In this sentence, 'zwłoki' is specifically describing the remnants of an animal.